Some people will downvote for the crossed-out object class, since some people believe that in a true digital document, old information would just be replaced, rather than crossed out. Something to keep in mind.

Your containment procedures are a bit on the bloated side. Stuff like "to combat potential memetic hazards and to prevent leaks of sensitive information" isn't really necessary, since it's assumed in-universe that all the instructions listed are there for solid reasons. There's no need to justify the procedures.

Try to avoid redacting anything in the containment section. If people don't know that info, how can they properly ensure containment?

I liked the propagation through the postal service angle, but I'm not too impressed by the "the envelopes contain sensitive information!! Foundation secrets!!! GOC sekrits!!!" It just seems kind of overblown and almost as if it was added to try and make the anomaly more dangerous/important so it would be interesting.

Ditto for the "it caused a SCP-096 containment breach" angle. You could probably get rid of that entire incident and it wouldn't hurt the article.

ETA: Don't refer to individuals as "subjects" unless they're actually part of an experimental research trial (being "subjected" to the experiment). Also, make sure that it doesn't seem like the effects mentioned only manifest when in a research environment (since I'm pretty sure that's not the case here).

I dunno. Pretty much the only thing I liked was the "postage stamps multiplying through the mail" bit… everything else seems reliant on other SCP articles you didn't write, since the driving point of this piece seems to be "oh man it's such a huge security liability!!!!"

I personally would enjoy this more if it didn't seem like a crisis of confidentiality… something like the postage stamps attempting to keep their species alive or generating fake love letters/friend letters/invitations to fun parties because please don't let us die out. People used to be so excited to get letters from their loved ones. What happened? would be more my style, but then, that's just me. I'm not too much of a "OH MAN EMERGENCY CONTAIN THEM ALL THEY'RE SPREADING" person.

Hi, Thanks for your feedback! I found myself completely agreeing with your criticism of the concept. I've rewritten a lot of my article to reflect this, so that it hopefully stands on its own as something interesting.